Safety razor



Dec; 4, 1934. J, Mu 1,982,878

SAFETY RAZOR Filed April 10, 1931 INVENTOR Jbsep/I Jams BY ATTORNEYPatented Dec. 4, 1934 UNITED STATES SAFETY RAZOR Joseph Muros, Astoria,N. -Y., assignor to Gillette Safety Razor Company, Boston, Mass, acorporation of Delaware Application April 10, 1931, Serial No. 529,154

Claims.

Some safety razors comprise"blade-clamping members, such. as a guardmember and a cap or blade-backing member, with means to cause saidmembers to clamp a member between them. In

5 some of such razors the guard member is provided with projections toenter positioning apertures in the blades. V

An object of my invention is toprovide means co-operative with one ofthe blade clamping members and with a blade to position said blade inshaving relation to the guard member in the event that such blade isprovided with a positioning aperture that does not accurately fit theprojections from the guard member to position the blade inshavingposition thereon.

In carrying out my invention I provide an adapter provided with anaperture to properly engage or fit and receive the projections from oneor both of the clamping members, said adapter having projections toco-operate with a blade My invention also comprises novel details ofimprovement more fully hereafter set forth and then pointed out in theclaims.

Reference is to be had in the accompanying drawing, wherein- I Figure 1is a side view 'of a safety razor embodying my invention. Fig. 2 is across section on line 2-2 in Fig. 1. Fig. 3 is a detail perspectiveviewof myimproved adapter. Fig. 4'is a plan view illustrating a position ablade may take upon the guard member in the event that thebladepositioning aperture does not fit the projections on the guardmember, and Fig. 5 is a partly broken plan view of parts assembled foruse.

Similar numerals indicate corresponding parts in the several views.

The numeral 1 indicates a guard member and,

2 indicates a cap or blade-backing member adapted to clamp a blade 3therebetween for shaving. Any suitable or desired means may be providedfor detachably connecting the members 1 and 2. I have illustrated thecap 2 provided with a threaded stem 4 adapted to pass through the guardmember and enter the threaded recess 5a in a handle 5, in a well-knownway, for detachably clamping the members 1 and 2 against the blade.

The guard member 1 is shown provided with spaced projections 6 adaptedto enter a blade positioning aperture 3a. in the blade, shown in theform of a longitudinal slot, the cap 2 being shown provided withrecesses 7 adapted to receive the projections 6. The cap 2 is shownprovided with a substantially centrally disposed projection 8 adapted topass through the aperture 30. of the blade and to entera recess 9 in theguard mem-v ber. The projections 6 and 8 are shown in noncircular formand are. disposed in substantial alignment when thecap and guard areassembled in shaving relation. The projections arenormally adapted toreceive a blade positioning aper-- ture in a blade substantiallycorrespondingin outline or contour to the general outline of the.collective group of the projections whereby the blade will be. retainedin shaving position between the clamping members land 2 when the latterare clamped together against the blade.

In order. to enable the members 1 and 2 to properly, retain av blade inshaving position between them in the event that such blade is providedwith an aperture that is not adapted to so receive the projections 6-and 8 as to properly re-. tain the blade in shaving position, I providean adapter 10, preferably comprising a relatively thin plate or piece ofmetal, having a blade po-j sitioning aperture 11 adapted properly-toreceive,- engage and co-operate with the projections 6 of the guard andthe projection 8 of the. Cap, to retain the adapter from displacement,.said adapter being arranged between or to fitbetween the clampingmembers in the position that would be assumed by a blade properlyapertured to fit said projections. The adapter 10 is relatively narrowwith respect to the width of the blade so as not to interfere with theproper flexing of the blade when clamped between the members 1 and 2,.as illustrated in Fig. 1. The adapter 10 is provided at its ends withoutwardly or upwardly extending projections 12 adapted to receivenotches or recesses 13 in the ends of the blade to retain the latter inshaving position with respect to the members 1 and 2. The projections 12of the adapter 10 are shown located in longitudinal alignment with theaperture or slot 11 and spaced from the ends thereof. The adapter andthe recesses 13 of the blade are shown located in longitudinal alignmentwith the aperture 0r s1ot 3a of the blade, the arrangement being suchthat when the adapter is in position on the guard member the blade maybe fitted to the adapter in any position in which the blade may beapplied on the adapter. I

, A blade having a large. aperture or slot 3a that is not adapted toengage'but merely to receive the projections 6 but not to position oralign the blade in shaving relation on the guard is illustratedin Fig.4,from which it will be understood that the blade may assume variousangular or edgewise positions with respect to the guard member. -When,however, the adapter 10. is placed upon the guard member and the aper--ture or slot 11 properly receives the projections 6 of' the guardmember, said adapter will be re tained in a proper position so that whenthe blade 3 is placed against the adapter and the projections -12 of theadapterenter the recesses 13 of the-blade, thelatter will be retained bythe adapter in proper shaving position on the guard member. Theprojection 8 from the cap'2 also by properly engaging or fitting theaperture 11 ofthe adapter causes the cap to be retained by the adapterin proper shaving position.

The inner surface 14 of the cap 2 is shown the blade and the adapter inposition between the guard member and the cap member to permit saidmembers to be properly clamped against the blade for retaining the sameinshaving po;-' sition without interference by the adapter, which isthin enough not to interferewith the clamping action of'the parts.

- In'the preferred form of the invention all of thealigning meansor'positionin'g means including the apertures or-slots 3a. and 11, theprojections 6 and 8, as well as the ears 12 and recesses. 13' arelocated preferably in the central zone of,

their respective elements and the longitudinal centralportion of therazor. head.

In view of'thefact that the alignment between: the adapter and cap andbetween the adapter and guard is mutual then it is self-evident that theadapter is directly -'engagedby the lug 8 of the cap and the lugs 6 oftheguard whereby the cap and guard are aligned through the medium of theadapter.: Furthermore, itmay be accurately stated that the adapter isaligned with the cap and guard by the projections on'the cap and guard.In the invention as disclosed there is no direct mutual engagementbetween the cap and aperture, said cap having a positioning projection-extending through the blade and adapter and engaging the latter,said projection'extending toward the guard but spaced from the guard andblade, said guard having a projection alsoex tending through'thebladeand adapter and engaging thelatter but spacedfrom the blade and the-cap,said projections being arranged inspaced relation whereby the cap andguard are aligned by the projections andth'e co-acting adapter,saidadapter having projections engaging and positioning the blade, and'co-acting means on said cap and handle to clamp the parts'together.

2. A safety razor according to claim -1 in which the projections arearranged in longitudinal'alignment with reference to each other and'therazor head.

3. A safety razor accordingto claim 1 in which the projections of thecap, guard and adapter are located in the central longitudinal portionof the razor head. 7

4. A safety razor comprising a head and a to align the members byco-op'eration of the pro} jections with the adapter, projections on theadapter engaging the positioning means on the blade toralign the samewith the cap and guard, said second-named projections located in spacedrelation'from the first-named projections, all of said projections beingin longitudinal alignment and co-acting means on the cap and handle todraw and clamp the parts together in shaving v relation. having acurvature whichis sufiicient toadmit 5. A safety razor according toclaim 4 in which the ends of the adapter are provided with projections,and the ends of the blade are provided with 'ears, said projectionsengaging said ears to'align the blade with the cap and guard.

6, A safety razor comprising a head and a handlasaid head including acap and a guard, a blade having a cutting edge, and'an-adapter, saidblade-being provided with a slot'o'r aperture so large that it y willreceive in spaced relation therefrom'conventional cap andguard projections, said slot being substantially as'wide as one third the width ofthe blade, said slot having-"a continuous uninterrupted outline,said'bl'ade having positioning ears on its ends, said adapter having anaperture and'positioning means to engage the ears of the blade, means onthe cap and; guard to locate andalign the adapter with the cap andguard, and means on the cap'and handle to clamp the parts together.

'7. A safety razor having a cap, a guard, an adapter and a blade, saidadapter and blade having longitudinally and centrally located slots,-interengaging means on said cap, guard and adapter pass freely throughthe slot without aligning the blade with the razor elements,saidbladebeing provided with a recess in each end thereofbeyond saidslot formingblade-positioning ears, said recesses being located inthelongitudinala'xis of said slot and adapted completely to locate theblade in shaving position.

9. A blade adapter for a safety razor of the type 'Whe'reina blade'isinterposed between two clamping members which are both provided withprojecting aligning means, said adapter comprising a plate member havingacentral longitudinal slot fitting the aligning means of both clampingmembers, and "blade engaging and positioning means located in thelongitudinal axis of said plate at the ends thereof and'remote from theends of said slot.

10. A blade adapter for a safety razor of the type wherein a blade isinterposed between two clamping members both having blade-locatingprojections thereon, said adapter. comprising a plate member having acentral longitudinal slot. adapted to engage the projections on both ofsaid clamping members and-thereby align said members, and blade engagingand positioning projections-in the longitudinal axis of said'platemember -at the ends thereof and spacedbeyond'th'e ends ofthe slot. I a

. JOSEPH MUR'OS.

